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Explained: What is cryptojacking, the cyber attack carried out by crypto miners?

‘Cryptojacking’ attacks on computer systems have gone up by 30% to 66.7 million in the first half of 2022 compared to the first half of last year, according to a report by SonicWall, a US-based cybersecurity firm.

“While volume increases were widespread, some business sectors were hit harder than others, such as the finance industry, which saw a rise of 269%,” the report said.

What is cryptojacking?

Cryptojacking is a cyber attack wherein a computing device is hijacked and controlled by the attacker, and its resources are used to illicitly mine cryptocurrency. To see also : Experts say parents are best fight against cyber threats. In most cases, the malicious programme is installed when the user clicks on an unsafe link, or visits an infected website — and unknowingly provides access to their Internet-connected device.

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Why is cryptojacking done?

Coin mining is a legitimate, competitive process used to release new crypto coins into circulation or to verify new transactions. It involves solving complex computational problems to generate blocks of verified transactions that get added to the blockchain. On the same subject : Stellar Cyber’s security sensors enable enterprises to improve their overall security posture. The reward for the first miner who successfully manages to update the crypto ledger through this route is crypto coins.

But the race to crack this 64-digit hexadecimal number code needs considerable computing power involving state-of-the-art hardware, and electrical power to keep the systems involved up and running.

Cryptojackers co-opt devices, servers, and cloud infrastructure, and use their resources for mining. The use of ‘stolen’ or cryptojacked resources slashes the cost involved in mining.

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Why have cryptojacking incidents gone up?

According to the SonicWall’s Cyber Threat Report, the crackdown on ransomware attacks is forcing cybercriminals to look for alternative methods. Cryptojacking involves “lower risk”, and promises “potentially higher payday”.

Terry Greer-King, vice president for EMEA (Europe, Middle East and Africa) at SonicWall, told Tech Monitor that cryptojacking is an appealing alternative for cybercriminal gangs as “it has a lower potential of being detected by the victim; unsuspecting users across the world see their devices get unaccountably slower, but it’s hard to tie it to criminal activity, much less point to the source”. This may interest you : China Cybersecurity and Data Protection: Monthly Update – December 2021 Issue.

“Unlike ransomware, which announces its presence and relies heavily on communication with victims, cryptojacking can succeed without the victim ever being aware of it,” the report said.

Why should this be a concern?

Cryptojacking is hard to detect and the victims of these attacks mostly remain unaware that their systems have been compromised. Some telltale signs are the device slowing down, heating up, or the battery getting drained faster than usual.

Apart from individuals, businesses too are on the target list of cryptojackers. According to the report, cryptojacking incidents targeting the retail industry rose by 63% year-to-date, while similar attacks on the financial industry skyrocketed 269%.

“The primary impact of cryptojacking is performance-related, though it can also increase costs for the individuals and businesses affected because coin mining uses high levels of electricity and computing power,” says the Interpol.

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